In the original Greek text of the New Testament, the word translated "creature" is the same as "creation," so the apostle Paul, in our text, is stressing the vital importance of being a "new creation" in Christ. The Lord Jesus Christ is nothing less than the mighty Creator of heaven and earth (Colossians 1:16), and the very same creative power which called the universe into existence must be exerted on each lost sinner to create in him a new nature, capable of having the eternal fellowship with God for which man and woman were created in the beginning.
This new creation is not only for the purpose of saving their souls, but also for transforming their lives. "Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new" (2 Corinthians 5:17). Although good works can never bring salvation, salvation must inevitably bring good works, for we are thereby "created in Christ Jesus unto good works, which God hath before ordained that we should walk in them" (Ephesians 2:10). Paul exhorts us to continually "put on the new man, which after God is created in righteousness and true holiness" (Ephesians 4:24).
Adam and Eve were originally created "in the image of God" (Genesis 1:27), but that image has been grievously damaged by unbelief and overt sin. Although still resident in man--in fact, distinguishing him from the animals--this divine image must be renewed through saving faith in our Creator/Redeemer, Jesus Christ. Therefore, the Scripture reminds all true believers that they "have put off the old man with his deeds; And have put on the new man, which is renewed in knowledge after the image of him that created him" (Colossians 3:9-10). HMM